Charged pion anisotropy in relativistic nucleus-nucleus collisions
| Autor: | J. Marroncle, D. L'Hôte, J. Gosset, M.C. Lemaire, M. Demoulins, Y. Terrien, L. Fraysse, Gerard Montarou, C. Cavata, J. Augerat, A. Le Merdy, M.J. Parizet, B. Lucas, Ph. Gorodetzky, P. Charmensat, R. Babinet, A. Rahmani, J. Poitou, F. Brochard, J. P. Alard, O. Valette, H. Fanet, C. Racca, Nicole Bastid, Pascal Dupieux |
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| Přispěvatelé: | Laboratoire de Physique Corpusculaire - Clermont-Ferrand (LPC), Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 1992 |
| Předmět: |
Physics
Nuclear and High Energy Physics 010308 nuclear & particles physics Plane (geometry) Nuclear Theory Nuclear matter 7. Clean energy 01 natural sciences Baryon Nuclear physics Momentum medicine.anatomical_structure Pion Mean field theory 0103 physical sciences medicine [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex] Atomic physics Nuclear Experiment 010306 general physics Anisotropy Nucleus |
| Zdroj: | Nuclear Physics A Nuclear Physics A, Elsevier, 1992, 536, pp.767-785 Nuclear Physics A, 1992, 536, pp.767-785 |
| ISSN: | 0375-9474 |
| Popis: | The momentum distributions with respect to the reaction plane for charged pions emitted in Ne-nucleus and Ar-nucleus collisions have been measured with the 4 π detector Diogene at the Saturn synchrotron. The reaction plane is estimated from the baryon momenta, using a standard technique for flow analysis. The pions exhibit a non-zero flow. For asymmetric systems, there is a preferential emission in the direction of the lighter (projectile) nucleus. Such a behaviour contradicts the predictions of INC calculations and is underestimated by QMD calculations which include mean field effects. It can be interpreted with a simple geometrical model in terms of absorption by the spectator nuclear matter. |
| Databáze: | OpenAIRE |
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